Rename openDexFileNative to openDexFile.

We no longer need two distinct methods.

Bug: 15563230
Change-Id: I71ae9e32da18fe1e6a06879579b53e11d29e98f7
diff --git a/runtime/native/dalvik_system_DexFile.cc b/runtime/native/dalvik_system_DexFile.cc
index 440d3d0..ac1a310 100644
--- a/runtime/native/dalvik_system_DexFile.cc
+++ b/runtime/native/dalvik_system_DexFile.cc
@@ -97,7 +97,7 @@
   void operator=(const NullableScopedUtfChars&);
 };
 
-static jlong DexFile_openDexFileNative(JNIEnv* env, jclass, jstring javaSourceName, jstring javaOutputName, jint) {
+static jlong DexFile_openDexFile(JNIEnv* env, jclass, jstring javaSourceName, jstring javaOutputName, jint) {
   ScopedUtfChars sourceName(env, javaSourceName);
   if (sourceName.c_str() == NULL) {
     return 0;
@@ -498,7 +498,7 @@
   NATIVE_METHOD(DexFile, getClassNameList, "(J)[Ljava/lang/String;"),
   NATIVE_METHOD(DexFile, isDexOptNeeded, "(Ljava/lang/String;)Z"),
   NATIVE_METHOD(DexFile, isDexOptNeededInternal, "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Z)Z"),
-  NATIVE_METHOD(DexFile, openDexFileNative, "(Ljava/lang/String;Ljava/lang/String;I)J"),
+  NATIVE_METHOD(DexFile, openDexFile, "(Ljava/lang/String;Ljava/lang/String;I)J"),
 };
 
 void register_dalvik_system_DexFile(JNIEnv* env) {